Organic-inorganic hybrid transparent materials containing chromium ion-doped forsterite (Cr:Mg2SiO4) crystals are investigated as gain media. Thin films and bulk samples are prepared by a sol-gel technique. Starting sols for host matrices, which are prepared from diphenyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and titanium tetra-n-butoxide, are mixed with flame spray made Cr:Mg2SiO4 nanocrystals ultrasonically. The hybrid materials containing Cr:Mg2SiO4 with high transparency are realized by matching refractive indices of the host matrices with that of Cr:Mg2SiO4 by controlling starting sols’ composition. A broad emission centered at 1170nm is confirmed under the excitation at 976nm.
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Arai et al. (2008) studied this question.
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